Xylophage is defined as "an eater of wood". This is a photo of the Locust Borer Beetle's larvae invading the branch of a tree. The locust borer's larvae and pupae remain in the branch of trees, as pictured here. The larvae stay in these branches and eat through the wood, causing a great deal of damage to the tree. This insect attacks only Black Locust trees. Adults of this insect however, spend time feeding on goldenrod flowers and simply use the holes that they dig as larvae in order to escape from the tree.